Merci beaucoup Mesdames et Messieurs!
@ Olivier: The photo has been taken at Dahlhausen, an old industrial valley near Wuppertal and you can see an upper ditch, from which water was taken for driving the apparatus in the cloth factory. I want to send you the negative after the trip. Merci!
@ Jean Jacques: Many thanks, I should scan the negative that provides a more detailed image.
@ Too much of honor, vielen herzlichen Dank.

Hi Jürgen. What a nice and intersting architectural portrait in town. It looks like Panke River.
If you agree, you could — but after your next trip, we aren't in a hurry — send the negative to my place and then I'll try to make a nice print of it on Baryta paper.